Nail-driving machine



Patented Jan. 1,9. 1886.

FIELL INVENTDR d A /M 2 Sheets-Sheet 2.

(No Model.)

E. L. WHEELER. NAIL DMVING MACHINE.

Patent'e Jan. 19, 1886.

| L l l l Il I I I I l l I I I I I I I I T I l l l l l l l l l I l I l I I I l l l l I I l l I l Il lllll Il WITNEEEIEE N. PETERS. Phnm-Limagmpher, Washington. D. (L

. UNITED STATES PATENT OFFICE.

EDGAR L. WHEELER, OF MARLBOROUGH, MASSACHUSETTS.

NAIL-DRIVING MACHINE.

SPECIFICATION forming part of Letters Patent No. 334,552, dated January 19, 1886.

Application tiled August 28, 1885. Serial No. 175,530. (No model.)

with the accompanying drawings, be herein` after fully described, and specifically defined in the appended claims.

My invention relates to nailing-machines for driving the common headless or wedge-shaped nail into the soles of boots and shoes, and particularly to the puncturingand driving devices, and the method of receiving and driving the nails and feeding the boot along to space the nails in the sole, and is an improvement upon the machine shown and described in Letters Patent of the United States No. 270,280, granted to F. M. Carter, January 9, 1883; vand my invention consists in the construction and combination of the divers devices embodied therein, as hereinafter more fully and particularly set forthand claimed.

ln the accompanying drawings, Figure 1 is a side elevation of the head portion of a nailing- Fig.

2 is a front elevation of the same. Fig. 3 is a 1 front elevation with the swinging face-plate which carries the awl and driver removed. Fig. 4 is aview of said carrier as detached and turned over to show the back or inner face thereof. Fig. 5 is a vertical section through 1 the throat of the machine, taken as on line x,

Fig. 2. Fig. 6 is a horizontal section' through the throat, taken as on line a, Fig. l..

A represents the head of the machine; B, the driving-shaft journaled in the head; C, the swinging face-plate, which serves as a carrier for the awl and driver, and is piyoted to the upper part of the head at D, and secured at its lower portion by a bolt, D', passed through a block fitted to slide in acurved slot formed in the head, so as to allow a free lateral movement to the carrier, as shown.

E is the feed-cam,which imparts the lateral swinging movement to carrier C through the arms F and I of a lever which has its bearings in hub H, formed upon or attached to the head of the machine, the said arms E and I being one or both adj ust-ably secured to their horizontal journal by set-screws, as shown.

Arm I carries a stud, J, adj ustably secured in a slot, K, therein, and has upon said stud a loosely-fitted block, L, which works in aslot, M, in the carrier C. In the back orinner face of said carrier are formed two grooves, to receive the driver-bar N and awl-bar O, Figs. 2

and Lwhich bars are fitted in their respective grooves Iiush with said inner face.

To the driver-bar N is attached a lug, P,

whereby the bar is raised through the operation of a cam, Q, adapted and arranged to act in contact therewith for that purpose, and which is fixed upon shaft B, and when the driver-bar is so raised to the point where the cam releases it, then it is forced downward by the reaction of a spring compressed by said upward movement of the bar, which spring is placed upon the upper portion of the bar and arranged to drive the bar downward by its expansive force in the usual manner, substantially as shown in the patent hereinbefore referred to.

. To the awl-bar O is secured a stud,which carries a roll, R, which roll operates in a groove in cam S, which cam positively operates the awl-bar in both directions. The driver-bar and awl-bar each carries a clamp at its lower end, by which the driver T and awl U are secured to their respective bars.

The throat-pieceV is secured to the lower end of carrier C by headed bolts W W,which pass through the carrier from the back side, the heads of the bolts being let into the same flush with the inner face thereof. Collar-nuts are threaded on the bolts on the front side of the carrier and throat-piece, and serve to clamp the throat-piece in position on the carrier, as

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depth exactly equal to the thickness of the nail which is to be used in the same, and the driver just fills this groove. The lower portions of grooves a and a are covered by a cap, b, Fig. 4, secured to the back side of the throatpiece by screws, as shown. In the front face of the throat-piece there is a groove, c, which at its lower end extends through the throatpiece and opens into the throat or groove a, where the latter groove is covered by cap b. In this groove c a pivoted guide-plate, d, Fig. 5, is hung, and against a projection on the front edge ofplatc d the lower end of a dat spring, e, bears, which at its upper end is secured to the throat-piece by two screws,ff.

rlhe office of plate d, which is pivoted at its upper end, as shown in Fig. is to keep the point of the nail received into the throat a firmly against the face of cap b,and thusproperly directed or guided into the hole made by the awl when the nail is driven, and the purpose ofthus pivoting and holding the plate in place by means of a spring, e, is that it may be sufficiently yielding to allow the driver to pass between it and cap 1J as the driver follows the nail down to drive it home. The nails are Vfed to the throat rt' through the nailrace g.

The means employed for supplying the nailrace with nails and forcing them along the line into the driver-th roat in and of themselves form no part of my invention, and are therefore not shown, but are substantially the same as those employed in the patented machine hereinbefore referred to.

The boot or shoe, when operated upon by means of my present invention, is held and supported upon a horn constructed and arranged to raise and lowerthe same, and against a rest and gage attached to the machine-head, all which devices, being old and well known, and a description of which not being deemed necessary to a full understanding of my present invention, are not shown.

In Figs. 3 and -i a nail is shown in throat c in position for driving, the driver being broken to admit of such illustration; but the awl and driver bars, the face-plate or carrier, and their actuating devices are all shown in the position they occupy when the driving of a nail has just been completed, and the machine has been stopped by the usual stop-inotion,which acts to arrest the movelnent of the machine at each revolution of the drivingshaft, such stopping device being constructed and arranged to be rendered inoperative by depressing a treadle connected therewith, whereby the operator is enabled to keep the machine in continuous operation at will. Such stopping devices, being also old and well knowmare not shown, and further description is deemed unnecessary.

The operation of my improvements, commencing with the same in the positions illustrated in the drawings, is as follows: Having just driven a nail, the next operation upon the shoe-sole is to puncture it with the awl at the proper distance from the nail last driven, which act and the successive operations which occur from the driving of one nail to thedriving of another are accomplished by the movement of the devices shown and above described in the following order and manner: First, by a partial revolution of cam E, Fig. 3, operating through lever-arms F and I, the carrier C, Fig. 2, is moved to the right a distance equal to half the required space between the nails in the shoe-sole, and carrying the awl into the position above the sole to make the required puncture; second, by a partial revolution of cam S, Fig. 2, the awl is driven into the shoe-sole by the operation of its driving-har by said cam through the connecting-stud and roll R; third, by a further rotation of cam E, Fig. 3, the carrier C is moved to the left a distance equal to the entire space required between the nails, and during this movement the awl remains in the sole and moves the slice along with it (the shoe being slightly lowered and the sole released from the rest by the automatic depression of its supportinghorn, before referred to) to the extent of the movement of the carrier; fourth, by a further rotation of cam S, Fig. 2, the awl is now withdrawn from the shoe-sole to a position which it maintains by means of a dwell or rest in said cam-groove, while cam E, Fig. 3, by a further rotary movement, and operating through said lever-arms F and I, causes carrier C to move to the right again t the extent of one-half the distance required between the nails, and thus brings the driver exactly opposite the delivery end of the nail-race g, which it keeps closed, and directly over the hole in the shoe-sole which the awl punctured last; fifth, a rotary movement of cam Q, Fig. 2, now raises the driver-bar N against the resistance of the spring upon its upper end, before referred to, with its driver T,which latter, being thus raised ,uncovers the end of the nailracc g and permits a nail to be fed therefrom into the driver-throat a'. The driver-bar being now released by cam Q to the action of the driving-spring, the driver T is thereby forced down upon the nail in throat a with sufficient power to drive the nail into the puncture last made by the awl and now standing opposite the end of the nail-race, and the delivery end of the race is again closed bythe driver, and it remains closed by contact with the inner face of the throat-piece V and with the sides of the awl and driver which constitute a part of said inner face while filling their respective grooves flush therewith during all intermediate movements which take place, as just described, between the times of driving the nails. Thus the `puncturing and feeding of the sole and driving the nails, and opening and closing the nailrace in receiving the nails one by one therefrom into the driver-throat, are accomplished by the means and movements herein described as constituting my invention.

I claiml. The throat-piece V, provided with grooves a, a', and c, cap b, pivoted plate d, and' IOO IIC)

spring e, constructed, combined, and arranged and nail-race g, all combined and' arranged to to operate together asrand for the purposes operate together and relatively to each other specified. as and for the purposes specified.

2. The grooved throatpiece V, constructed EDGAR L. WHEELER. 5 substantially as described, carrier C, awl U, Witnesses:

- driver T, and mechanism for actuating the EUGENE HUMPHREY,

same, substantially in the manner specified, T. W. PORTER.` 

